Inner tire.



G. V. KRICHBAUM.

INNER TIRE.

APPLICATION FILED DEC. 4. I9I3.

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Patented, Apr. 27, 1915.

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' vTo all whom, it may' concern.'

Be it known that I, GUYzV. Knicnsanrna citizen of the United States, 'residingat Ashland, in the county of Ashland and State of Uhio, have inventeda 4certain new ,and useful'Improvenient in Inner rll`ires, of which the following is a full, clear, and'exact de'- vscription. f y i rIhis invention relates to a .device adapted to be inserted within the outer tire or shoe of a tiresuchas is ordinarily used upon automobiles, the same forming a reinforcement for the outer tire, giving the tire a longer useful life,lpreventing blowouts, and forming a supporting and holding medium in the event that Vthe outer tire is cutI Generally speaking, thea-invention comprisesthe-elements and-combinations there- 0f set forthl in the accompanying*I claims.

Reference should be Ahad tothe' accompanying drawings lforming a part `of this speci-y iication, i-n whiehl Figure 1 is a side elevation of thel device of my invention, with certain portions shown in section; and lFig. Qshows, in section, a portion of a tire with the 'device of my invention incorporated therein.

The device, or inner tire, as will beclearly seen from the drawing, comprises'a body which is indicated at l, the same being coni s t-ructed of one or more plies of fabric or vother flexible material which may be arranged with respect to each other in any d esired mannen These plies of fabric will have previousl been impregnated` with suitable rubber so ution, andthe device itself 1s formed upon a suitable form or mandrel to give the saine in general the shape of an automobile tire.

The device when thus formed is treated in a suitable vulcanizing furnace, and I prefer totreat the same until the rubber solution,

with which the fabric is impregnated is semicured,-that is to say, the rubber is-not fully cured. The semi-curing is desirable and `advisable in that it insures great flexibility and consequently longer life when the device is in use within a tire.

The outer surface of the device may be coated with a suitably preparedrubber gum solution with vulcanizing properties, so that when the device has been inserted in a tire,

and the tire is put in use, the heat engendered by the passing of the tire over the road, will serve to cause the device to be-` come attached to the tire, by virtue of the ,Applicationiled December 4, 1913. Serial No.

vulcanizing solution having 'become vulc'anplained and claimed in Patent No. 945,649,

granted to James C. Warring and in Patent No. 94:4,722, granted to Brent S. Eshelman.y

The device herein described is made inthe lform of an endless tube, the innen edges of which are not united, but 4are free,-"fthe edges being suliciently long so that there is an overlapping. One of the edges has Asecured thereto a non-extensible and `fairly rigid material, which inthe vpresent portion is shown as a Wire', asindicated at 2 in Fig. 2. I n the device as shown, the wire extends continuously throughout the peripheral length of thc-edge to which it is-secured,.and the wire is held by enfolding the same .withinl a piece of fabric or other flexible material which forms a portion of one of theY inner edges,-the fabric ,beingsuitably held to inclose the wire, by the use of cement or by vulcanization. The other edge ofthe inner tire is free-and it is intended that the vfree end shall lap upon and pass the edge vwhich carries the wire, preferably upon the inside.

This construction results inv an inner tire which has adjustability. That is to say, the device. may be adjusted within Iany given tire, so that it will absolutely conform to the walls of that tire.

It frequently happens that intires of different makes, that tires rated to be of the same size vary slightly from what ,should be their true dimensions. That is to say, all tires which are rated, for instance, 34 by 4" are not always exactly of this size, and frequently' the diameter will vary as much as one-half inch. It will be apparent that with a device such as herein illustrated, the inner tire may be adjusted so as to accurately fill the tire and coperate with the'inner walls at all points, which would notl be the case were lthe inner tire made to be exactly of' a given diameter, where the tire `-Inay vary from its correct or rated diameter.

y After an inner tire has been inserted ina tire and the inner tube has been inflated, it will press the overlapping pal 4, into close engagement withl the edge of the inner tire that carries the wire 2. v'lihis will cause the flap 4 to lock around the wire 2, andl thus hold the flap 4 from displacement. In addition, it will be appreciated that the flap 4 serves as a protection vto, the innen tube against any pinching which is frequently a edges of the outer tireor shoe. Therefore the edge of the inner tire to which the wire 2 is attached,'will be securely anchored, so, that the edge may not crawl or creepl up thev side walls of the outer tire. r

As before stated, the edge or overlappingportion 4 is held by the lock which is formed when the inner tubeis inflated and presses the flap 4 into engagement with'. the edge which carries the wire 2. c

Having thus described my invention, what -I claim is:- y

1. An inner tire for use inautomobile tires comprising a' hollow tubular body made of ilexible material, the body being split u on its 'inner surface to 4form edges, non- -stretchable material associated with one of said edges, the other edge being unsecured 30 and adapted tov overlap and lock around the first mentioned edge, wherebyr the edges are the beads which are usually formed upon the i 'said non-stretchable means when the inner' tube of the tire is inflated.

3. A11-inner tire for use ,in vautomobile tires comprising a hollow tubular body, made of' flexible 'material Ythe? body lbeing split upon its innensurfaceftofform. edges, l an annular wire member'as'sociated'with one of said edges and adapted to encircle v the rim of the wheel to which it'may be applied, the other edge of the`tubular body be-4 ing lunsecured and being adapted to extend 'upwardly upon the inner walls of the inner tire and to lock around the said wire when the inner tube of the tire isinflated.

In testimony whereof, I hereunto .aiix my GUYV. KRICHBAUM. e

. Witnesses:

EARL HAMILTON, `Tnoal-I. MOORE.

signature in the presence oftwo witnesses. 

